Global Patent Index - EP 3698202 B1

EP 3698202 B1 20211208 - NEAR-EYE SYSTEM HAVING POLARIZATION WAVEGUIDE

Title (en)

NEAR-EYE SYSTEM HAVING POLARIZATION WAVEGUIDE

Title (de)

AUGENNAHES SYSTEM MIT POLARISATIONSWELLENLEITER

Title (fr)

SYSTÈME PROCHE DE L'OEIL AYANT UN GUIDE D'ONDES DE POLARISATION

Publication

EP 3698202 B1 20211208 (EN)

Application

EP 19789821 A 20190927

Priority

  • US 201816159258 A 20181012
  • US 2019053409 W 20190927

Abstract (en)

[origin: US2020117004A1] A near-eye display system includes a polarization waveguide having an in-coupling interface disposed proximate to a first end and an out-coupling interface disposed proximate to an opposite second end. The polarization waveguide is configured to convey light incident at the in-coupling interface to the out-coupling interface by inducing multiple changes in a polarization state of the light as the light traverses the polarization waveguide. At least a subset of the changes in polarization state induce the light to reflect within the polarization waveguide without relying on total internal reflection (TIR).

IPC 8 full level

G02B 27/01 (2006.01); G02B 27/28 (2006.01)

CPC (source: EP US)

G02B 5/3083 (2013.01 - US); G02B 27/0172 (2013.01 - EP US); G02B 27/283 (2013.01 - US); G02B 27/283 (2013.01 - EP); G02B 2027/0178 (2013.01 - US)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

US 10976552 B2 20210413; US 2020117004 A1 20200416; CN 111448505 A 20200724; CN 111448505 B 20230307; EP 3698202 A1 20200826; EP 3698202 B1 20211208; EP 3955047 A1 20220216; WO 2020076522 A1 20200416

DOCDB simple family (application)

US 201816159258 A 20181012; CN 201980006358 A 20190927; EP 19789821 A 20190927; EP 21193118 A 20190927; US 2019053409 W 20190927